Process of fireproofing textile materials.



UNITED STATES PATENT ()FFIUEO WILLIAM HENRY PERKIN, JR, OF MANCHESTER, ENGLAND, ASSIGNOR OF ONE-HALF TO WHIPP BROTHERS & TOD, LIMITED, OF MANCHESTER,

ENGLAND.

Specification of Letters Patent.

Patented June 11, 1907.

Application filed May 10, 1902. Serial No. 106,837-

To 00% whom it may concern.-

Be it known that I, WILLIAM HENRY PER- KIN, Jr, Ph. D. F. R. 3., a subject of the King of Great Britain and Ireland, residing at Owens College, in the city of Manchester, in the county of Lancaster, England, rofessor of organic chemistry, have invente certain new and useful Improvements in the Treatment ofRawCotton and Flax and Cotton and Linen Goods to Reduce the Inflammability Thereof; and I do hereby declare the following to be a full, clear, and exact description of the invention, such as will enable others skilled in the art to which it appertains to make and use the same.

This invention relates to the treatment of raw cotton and flax and cotton and linen goods generally, (and especially the flufly cotton goods known as flannelette) for rendering them less inflammable than hitherto by fixing an insoluble compound in the fibers of the material, so that they can be repeatedly washed and still retain their resistance to ignition.

The object of this invention is to efiect improvements and modifications on the process,

. or which I have obtained Letters Patent N 0 844,042, Feb. 12, 1907.

The following are examples of Ways in which this invention may be performed, as

applied, for example, to flannelette ofme-- dium quality, but the invention is notlimited to these examples (the parts are by volume) Example I. The goods are treated with a stannate of soda solution of 1.100 specific gravity and are then dried and afterward treated with a bath made up of equal parts of tungstate of soda solution of 1.300specific gravity, and of ammonium chlorid solution of 1.050 specific gravity and one part of ammonia solution of .880 specific gravity. The goods are then dried, or dried and steamed.

Example II. The goods are treated with a stannate of soda solution of 1.100 specific gravity and are then dried and afterward treated with a bath made up of seven parts of tungstate of soda solution of 1.300 specific gravity, three parts of acetic acid of 1.050 specific gravity and four parts of ammonium chlorid solution of 1.050s ecific gravity. The goods are then dried, or ried and steamed.

It is preferred in treating woven goods and the like, as aforesaid, to remove ,sizing before the treatment, but this is not essential.

I,.claim as my invention:

1. The herein described process of rendering textile materials less inflammable, said process consisting in fixing an insoluble compound in the fibers of the material by subecting the material to the action of a soluble stannate, then drying and then subjecting the material to the action of a bath containing a salt of ammonium, substantially as described.

2. The herein described process of rendering textile materials less inflammable, said process consisting in fixing an insoluble compound in the fibers of the material by subjecting the material to the action of a soluble stannate, then dryingand then subjecting the material to the action of a bath containing a soluble tungstate and a saltof ammonium.

In tes'timony'whereof I affix my signature in the presence of two witnesses.

WILLIAM HENRY PERKIN, JUNIOR.

Witnesses:

W. GERALD REYNOLDS, PER Y READ GOLDRING. 

